9216051861 has 8 divisors (see below), whose sum is σ = 12822333120. Its totient is φ = 5876902592.

The previous prime is 9216051851. The next prime is 9216051877. The reversal of 9216051861 is 1681506129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9216051861 - 2⁵ = 9216051829 is a prime.

It is a super-2 number, since 2×9216051861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9216051811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66782916 + ... + 66783053.

It is an arithmetic number, because the mean of its divisors is an integer number (1602791640).

Almost surely, 2^9216051861 is an apocalyptic number.

It is an amenable number.

9216051861 is a deficient number, since it is larger than the sum of its proper divisors (3606281259).

9216051861 is a wasteful number, since it uses less digits than its factorization.

9216051861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133565995.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 9216051861 is about 96000.2701089950. The cubic root of 9216051861 is about 2096.5970480643.

The spelling of 9216051861 in words is "nine billion, two hundred sixteen million, fifty-one thousand, eight hundred sixty-one".